2 files changed, 15 insertions, 0 deletions

diff --git a/sound/pci/ac97/ac97_codec.c b/sound/pci/ac97/ac97_codec.c
index a4b72cd2eea0..0677d41239a9 100644
--- a/sound/pci/ac97/ac97_codec.c
+++ b/sound/pci/ac97/ac97_codec.c
@@ -367,6 +367,7 @@ int snd_ac97_update(ac97_t *ac97, unsigned short reg, unsigned short value)
                 ac97->regs[reg] = value;
                 ac97->bus->ops->write(ac97, reg, value);
         }
+        set_bit(reg, ac97->reg_accessed);
         up(&ac97->reg_mutex);
         return change;
 }
@@ -410,6 +411,7 @@ int snd_ac97_update_bits_nolock(ac97_t *ac97, unsigned short reg,
                 ac97->regs[reg] = new;
                 ac97->bus->ops->write(ac97, reg, new);
         }
+        set_bit(reg, ac97->reg_accessed);
         return change;
 }
 
diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
index cc16f95f9cef..c3c3b68b4540 100644
--- a/sound/pci/intel8x0.c
+++ b/sound/pci/intel8x0.c
@@ -424,6 +424,7 @@ struct _snd_intel8x0 {
         unsigned xbox: 1;               /* workaround for Xbox AC'97 detection */
 
         int spdif_idx;  /* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */
+        unsigned int sdm_saved; /* SDM reg value */
 
         ac97_bus_t *ac97_bus;
         ac97_t *ac97[3];
@@ -2373,6 +2374,8 @@ static int intel8x0_suspend(snd_card_t *card, pm_message_t state)
         for (i = 0; i < 3; i++)
                 if (chip->ac97[i])
                         snd_ac97_suspend(chip->ac97[i]);
+        if (chip->device_type == DEVICE_INTEL_ICH4)
+                chip->sdm_saved = igetbyte(chip, ICHREG(SDM));
         pci_disable_device(chip->pci);
         return 0;
 }
@@ -2386,6 +2389,16 @@ static int intel8x0_resume(snd_card_t *card)
         pci_set_master(chip->pci);
         snd_intel8x0_chip_init(chip, 0);
 
+        /* re-initialize mixer stuff */
+        if (chip->device_type == DEVICE_INTEL_ICH4) {
+                /* enable separate SDINs for ICH4 */
+                iputbyte(chip, ICHREG(SDM), chip->sdm_saved);
+                /* use slot 10/11 for SPDIF */
+                iputdword(chip, ICHREG(GLOB_CNT),
+                          (igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_PCM_SPDIF_MASK) |
+                          ICH_PCM_SPDIF_1011);
+        }
+
         /* refill nocache */
         if (chip->fix_nocache)
                 fill_nocache(chip->bdbars.area, chip->bdbars.bytes, 1);